format ’12345′ to ’12,345′ javasc …
format ’12345′ to ’12,345′
javascript:
string.replace(/(\d)(?=(\d\d\d)+(?!\d))/g, function(s){return s+","})
ruby:
string.gsub(/(\d)(?=(\d\d\d)+(?!\d))/) { |match| match + ',' }
DecimalFormat class also can be used.
